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fix a preprocessor for .S

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Lets assume that in *.S files a preprocessor directive
    follow '#' char w/o spaces between. Otherwise there is
    too many problems with the content of the comments.
This commit is contained in:
seyko 2015-04-10 16:53:29 +03:00
parent 8037a1ce39
commit d81611b641
3 changed files with 21 additions and 4 deletions
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5
libtcc.c
View File

@ -1146,10 +1146,13 @@ ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags)
if (ext[0])
ext++;
parse_flags = 0;
#ifdef CONFIG_TCC_ASM
/* if .S file, define __ASSEMBLER__ like gcc does */
if (!strcmp(ext, "S"))
if (!strcmp(ext, "S") || !strcmp(ext, "s")) {
tcc_define_symbol(s1, "__ASSEMBLER__", NULL);
parse_flags = PARSE_FLAG_ASM_FILE;
}
#endif
/* open the file */

1
tcc.h
View File

@ -1149,6 +1149,7 @@ ST_DATA TokenSym **table_ident;
returned at eof */
#define PARSE_FLAG_ASM_COMMENTS 0x0008 /* '#' can be used for line comment */
#define PARSE_FLAG_SPACES 0x0010 /* next() returns space tokens (for -E) */
#define PARSE_FLAG_ASM_FILE 0x0020 /* we processing an asm file */
ST_FUNC TokenSym *tok_alloc(const char *str, int len);
ST_FUNC char *get_tok_str(int v, CValue *cv);

19
tccpp.c
View File

@ -782,6 +782,8 @@ redo_start:
else if (parse_flags & PARSE_FLAG_ASM_COMMENTS)
p = parse_line_comment(p);
}
else if (parse_flags & PARSE_FLAG_ASM_FILE)
p = parse_line_comment(p);
break;
_default:
default:
@ -1432,7 +1434,7 @@ ST_FUNC void preprocess(int is_bof)
saved_parse_flags = parse_flags;
parse_flags = PARSE_FLAG_PREPROCESS | PARSE_FLAG_TOK_NUM |
PARSE_FLAG_LINEFEED;
parse_flags |= (saved_parse_flags & PARSE_FLAG_ASM_COMMENTS);
parse_flags |= (saved_parse_flags & (PARSE_FLAG_ASM_FILE | PARSE_FLAG_ASM_COMMENTS));
next_nomacro();
redo:
switch(tok) {
@ -2259,6 +2261,11 @@ maybe_newline:
case '#':
/* XXX: simplify */
PEEKC(c, p);
if (is_space(c) && (parse_flags & PARSE_FLAG_ASM_FILE)) {
p = parse_line_comment(p);
goto redo_no_start;
}
else
if ((tok_flags & TOK_FLAG_BOL) &&
(parse_flags & PARSE_FLAG_PREPROCESS)) {
file->buf_ptr = p;
@ -2588,7 +2595,12 @@ maybe_newline:
p++;
break;
default:
tcc_error("unrecognized character \\x%02x", c);
if ((parse_flags & PARSE_FLAG_ASM_FILE) == 0)
tcc_error("unrecognized character \\x%02x", c);
else {
tok = ' ';
p++;
}
break;
}
tok_flags = 0;
@ -3215,7 +3227,8 @@ ST_FUNC int tcc_preprocess(TCCState *s1)
preprocess_init(s1);
ch = file->buf_ptr[0];
tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
parse_flags = PARSE_FLAG_ASM_COMMENTS | PARSE_FLAG_PREPROCESS |
parse_flags = (parse_flags & PARSE_FLAG_ASM_FILE);
parse_flags |= PARSE_FLAG_ASM_COMMENTS | PARSE_FLAG_PREPROCESS |
PARSE_FLAG_LINEFEED | PARSE_FLAG_SPACES;
token_seen = 0;
file->line_ref = 0;